... points:1,2,4,6,10,16-touch 2 outdoor & indoor usage 3 water-proof,vandal-proof 4 fast response, super ... pen. infrared touch screen is a updated version of multi-point product. , w series are reliable for installation and convenient for ... Designed with narrow frame for easy portablen Three-point write with peace,precise six-point touchingn Without driver,supporting plug and playn ...